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5 Memory

More memory options are available than ever before with the Dell PowerEdge M820 — greater

capacities, higher frequencies and more flexibility. The M820 supports up to 1.5TB of memory

and speeds up to 1600MT/s, providing high performance in a variety of applications. High memory

density means there is no compromise when it comes to virtualization.

Increase your uptime and reduce data loss due to Dell's focus on reliability, availability and

serviceability (RAS) features. RAS aids in the rapid and accurate diagnosis of faults that require service,

increasing your memory reliability. System uptime is reinforced with RAS features like memory

mirroring, sparing and many others.

In addition to supporting existing RDIMM technologies, the M820 supports load reduced DIMMs

(LRDIMMs), which use a buffer to reduce memory loading and allow for greater density, allowing for

the maximum platform memory capacity.

Table 6 lists the memory technologies supported by the M820.

Feature

Buffer

Frequencies*

Ranks supported

Capacity per DIMM

Maximum DIMMs per channel

DRAM technology

Temperature sensor

Error Correction Code (ECC)

Single Device Disable Code (SDDC)

Address parity

*Although the M820 supports DIMM speeds of 800MT/s and 1066MT/s, you can only purchase this system with

DIMM speeds of 1333MT/s and 1600MT/s on Dell.com/PowerEdge.

PowerEdge M820 Technical Guide

Table 6.

Memory technologies supported

RDIMM

Yes

800, 1066, 1333 or

1600MT/s

1, 2 or 4

4, 8, 16 or 32GB

x4 or x8

Yes

LRDIMM

Yes

1066 or 1333MT/s

32GB

Yes